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usb: musb: Disable interrupts on suspend, enable them on resume

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In certain situations, an interrupt triggers on resume, before musb_start()
has been called. This has been observed to cause enumeration issues after
suspend/resume cycles with AM335x.

Signed-off-by: Pascal Huerst <pascal.huerst@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Pascal Huerst 2015-09-03 10:50:58 +02:00 committed by Felipe Balbi
parent 6527cc2776
commit 6fc6f4b87c
1 changed files with 6 additions and 0 deletions
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6
drivers/usb/musb/musb_core.c
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@ -2449,6 +2449,9 @@ static int musb_suspend(struct device *dev)
struct musb *musb = dev_to_musb(dev);
unsigned long flags;
musb_platform_disable(musb);
musb_generic_disable(musb);
spin_lock_irqsave(&musb->lock, flags);
if (is_peripheral_active(musb)) {
@ -2502,6 +2505,9 @@ static int musb_resume(struct device *dev)
pm_runtime_disable(dev);
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
musb_start(musb);
return 0;
}